======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '184'
                                          'artist'  'Cat Power'
                                     'text_people'  'Chan Marshall'
                                         'release'  'You Are Free'
                                           'title'  'Speak For Me'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '92.772'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'COMM:ID3v1 Comment:XXX'                            '4'
'COMM:iTunes_CDDB_1:eng'                            'AB0C780E+239605+14+150+14042+30092+48002+61805+80412+97597+113492+134255+147492+166917+188740+200895+218250'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '4'
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x006\x002\x005\x003\x006\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x009\x009\x009\x001\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x000\x009\x000\x006\x004\x007\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x006\x002\x005\x003\x006\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x009\x009\x009\x001\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x000\x009\x000\x006\x004\x007\x00\x00\x00')
"PRIV:WM/WMCollectionGroupID:Ö¥\x1aEÕ°\xadL\x94'&ë\x07\tñÏ"  PRIV(owner='WM/WMCollectionGroupID', data=b"\xd6\xa5\x1aE\xd5\xb0\xadL\x94'&\xeb\x07\t\xf1\xcf")
"PRIV:WM/WMCollectionID:Ö¥\x1aEÕ°\xadL\x94'&ë\x07\tñÏ"  PRIV(owner='WM/WMCollectionID', data=b"\xd6\xa5\x1aE\xd5\xb0\xadL\x94'&\xeb\x07\t\xf1\xcf")
'PRIV:WM/WMContentID:\x91¨\x06x{IzB\x9bǬ|g¥\x9dJ'  PRIV(owner='WM/WMContentID', data=b'\x91\xa8\x06x{IzB\x9b\xc7\xac|g\xa5\x9dJ')
'TALB' (Album/Movie/Show title)                     'You Are Free'
'TBPM' (BPM (beats per minute))                     '92.772'
'TCOM' (Composer)                                   'Chan Marshall'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2003'
'TENC' (Encoded by)                                 'iTunes v2.0.2'
'TIT2' (Title/songname/content description)         'Speak For Me'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cat Power'
'TPE2' (Band/orchestra/accompaniment)               'Cat Power'
'TPUB' (Publisher)                                  'Matador'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.99 dB'
'TXXX:replaygain_track_peak'                        '0.451609'

========================== row from database ==========================
                                              'id'  1334294
                                            'path'  /data/Music/Bulk/00poprockelectronic/Cat Power/You Are Free/04 - cat power - speak for me.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  184
                                           'genre'  ifs-songwriter
                                        'filesize'  4420813
                                           'mtime'  1637330718
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 04 cat power speak for me ifs songwriter
                                      'tag_artist'  Cat Power
                                     'tag_release'  You Are Free
                                       'tag_title'  Speak For Me
                                             'bpm'  92.772
                                    'search_title'  'for':2 'me':3 'speak':1
                                   'search_artist'  'cat':1 'power':2
                                  'search_release'  'are':2 'free':3 'you':1
                                     'search_rest'  '00poprockelectronic':1 'cat':2 'for':5 'ifs':7 'me':6 'power':3 'songwriter':8 'speak':4
                                    'search_combo'  '00poprockelectronic':9 'are':7C 'cat':4B,10 'for':2A,13 'free':8C 'ifs':15 'me':3A,14 'power':5B,11 'songwriter':16 'speak':1A,12 'you':6C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1637330717.6258729  (2021-11-19 15:05:17)
                             'size'  4420813